Post on 21-Dec-2015
© T Madas
© T Madas
Find 7 x 0.1 =
7 x 110
=7
10= 0.7
0.7
Find 32 x 0.01 =
32 x 1100
=32100
=0.32
0.32
Find 1860 x 0.001 =
1860 x 11000
=18601000
= 1.86
1.86
What is one tenth of 7?
What is one hundredth of
32?
What is one thousandth of
1860?
© T Madas
Find 12.5 x 0.1 =
12.5 x 110
=12.510
= 1.25
1.25What is one
tenth of 12.5?
Multiplying by 0.1 is the same as
Multiplying by 0.01 is the same as
Multiplying by 0.001 is the same as
Multiplying by 0.0001 is the same as
etc
dividing by 10
dividing by 100
dividing by 1000
dividing by 10000
What happens if we divide by 0.1, 0.01, 0.001 etc?
© T Madas
Find 9 ÷ 0.1 =
9 ÷ 110
=101
= 90
90
9 x
How many tenths in 9?
Find 5 ÷ 0.01 =
5 ÷ 1100
=1001
=500
500
5 x
How many hundredths in 5?
© T Madas
Find 32 ÷ 0.001 =
32 ÷ 11000
=1000
1=32000
32000
32x
How many thousandths in 32?
© T Madas
Multiplying by 0.1 is the same as
Multiplying by 0.01 is the same as
Multiplying by 0.001 is the same as
Multiplying by 0.0001 is the same as
etc
dividing by 10
dividing by 100
dividing by 1000
dividing by 10000
Dividing by 0.1 is the same as
Dividing by 0.01 is the same as
Dividing by 0.001 is the same as
Dividing by 0.0001 is the same as
etc
multiplying by 10
multiplying by 100
multiplying by 1000
multiplying by 10000
© T Madas
Practice on
Multiplying & Dividing
by 0.1, 0.01, 0.001 …
© T Madas
Multiply and Divide by 0.1, 0.01, 0.001, etc
43 x 0.1 = 4.3
175 x 0.01 = 1.75
123 x 0.1 = 12.3
58 x 0.001 = 0.058
570 ÷ 0.1 = 5700
86 ÷ 0.1 = 860
32 ÷ 0.01 =3200
412 ÷ 0.1 = 4120
8.6 ÷ 0.1 = 86
4.7 ÷ 0.01 = 470
1.25 ÷ 0.1 =12.5
2.813 ÷ 0.001 = 2813
42 x 0.1 = 4.2
465 x 0.01 = 4.65
320 x 0.01 =3.2
4109 x 0.01 = 41.09
© T Madas
66 ÷ 0.1 = 660
31 x 0.1 = 3.1
14.9 ÷ 0.1 =149
10 x 0.1 = 1
100 ÷ 0.1 = 1000
7500 x 0.1 = 750
4.52 ÷ 0.1 = 45.2
34 ÷ 0.1 = 340
2.6 ÷ 0.1 = 26
8.7 ÷ 0.01 = 870
17.5 x 0.1 = 1.75
439.4 x 0.001 = 0.4394
213 x 0.1 = 21.3
465 ÷ 0.1 = 4650
0.87 ÷ 0.1 = 8.7
0.015 ÷ 0.001 = 15
Multiply and Divide by 0.1, 0.01, 0.001, etc
© T Madas
131 x 0.1 = 13.1
35 ÷ 0.1 = 350
0.5 x 0.1 = 0.05
0.7 ÷ 0.1 = 7
0.93 x 0.1 =0.093
18 ÷ 0.01 = 1800
2.7 x 0.01 =0.027
0.41 ÷ 0.01 = 41
9.63 x 0.1 = 0.963
5.52 ÷ 0.1 = 55.2
0.05 x 0.1 = 0.005
0.04 ÷ 0.001 = 40
0. 02 x 0.01 =0.0002
35 ÷ 0.1 = 350
0.091 ÷ 0.001 = 91
1876 x 0.01 = 18.76
Multiply and Divide by 0.1, 0.01, 0.001, etc
© T Madas
Practice on
Multiplying & Dividing
by Powers of 10
© T Madas
16 ÷ 0.1 =160
1.23 x 10 = 12.3
48 ÷ 10 = 4.8
0.58 x 10 =5.8
57 ÷ 1000 = 0.057
8.6 ÷ 0.01 = 860
32 ÷ 10 = 3.2
41 x 0.1 = 4.1
0.65 x 100 = 65
2.71 ÷ 0.01 = 271
2.25 x 10 =22.5
4.916 ÷ 0.001 = 4916
52 ÷ 1000 = 0.052
375 x 0.01 =3.75
665 x 0.1 = 66.5
792 ÷ 0.1 =7920
Multiply and Divide by Powers of 10
© T Madas
151 ÷ 0.1 = 1510
364 x 0.01 = 3.64
0.2 x 10 = 2
0.83 ÷ 10 = 0.083
930 x 0.01 = 9.3
18 ÷ 0.01 = 1800
17 ÷ 100 = 0.17
413 x 0.1 = 41.3
7.62 ÷ 10 =0.762
1.92 x 0.1 = 0.192
0.85 x 1000 =850
6.006 x 1000 = 6006
72 ÷ 1000 = 0.072
305 ÷ 0.01 =30500
609 x 0.001 = 0.609
1656 x 0.01 = 16.56
Multiply and Divide by Powers of 10
© T Madas
16.1 ÷ 0.1 =161
3.64 x 10 = 36.4
9.2 x 0.1 = 0.92
0.83 ÷ 10 =0.083
93 ÷ 100 = 0.93
1825 ÷ 0.01 = 18.25
1.7 x 0.1 = 0.17
0.04 x 10 = 0.4
7.62 ÷ 10 =0.762
1.48 ÷ 0.1 = 14.8
411 x 0.01 = 4.11
0.096 x 1000 = 96
27 ÷ 1000 = 0.027
305 x 0.001 = 0.305
609 ÷ 0.1 = 6090
96 x 0.0001 = 0.0096
Multiply and Divide by Powers of 10
© T Madas
Quick Test on
Multiplying & Dividing
by 0.1, 0.01, 0.001 …
© T Madas
Multiply and Divide by 0.1, 0.01, 0.001, etc
43 x 0.1 = 4.3
175 x 0.01 = 1.75
123 x 0.1 = 12.3
58 x 0.001 = 0.058
570 ÷ 0.1 = 5700
86 ÷ 0.1 = 860
32 ÷ 0.01 =3200
412 ÷ 0.1 = 4120
8.6 ÷ 0.1 = 86
4.7 ÷ 0.01 = 470
1.25 ÷ 0.1 =12.5
2.813 ÷ 0.001 = 2813
42 x 0.1 = 4.2
465 x 0.01 = 4.65
320 x 0.01 =3.2
4109 x 0.01 = 41.09
© T Madas
66 ÷ 0.1 = 660
31 x 0.1 = 3.1
14.9 ÷ 0.1 =149
10 x 0.1 = 1
100 ÷ 0.1 = 1000
7500 x 0.1 = 750
4.52 ÷ 0.1 = 45.2
34 ÷ 0.1 = 340
2.6 ÷ 0.1 = 26
8.7 ÷ 0.01 = 870
17.5 x 0.1 = 1.75
439.4 x 0.001 = 0.4394
213 x 0.1 = 21.3
465 ÷ 0.1 = 4650
0.87 ÷ 0.1 = 8.7
0.015 ÷ 0.001 = 15
Multiply and Divide by 0.1, 0.01, 0.001, etc
© T Madas
131 x 0.1 = 13.1
35 ÷ 0.1 = 350
0.5 x 0.1 = 0.05
0.7 ÷ 0.1 = 7
0.93 x 0.1 =0.093
18 ÷ 0.01 = 1800
2.7 x 0.01 =0.027
0.41 ÷ 0.01 = 41
9.63 x 0.1 = 0.963
5.52 ÷ 0.1 = 55.2
0.05 x 0.1 = 0.005
0.04 ÷ 0.001 = 40
0. 02 x 0.01 =0.0002
35 ÷ 0.1 = 350
0.091 ÷ 0.001 = 91
1876 x 0.01 = 18.76
Multiply and Divide by 0.1, 0.01, 0.001, etc
© T Madas
Quick Test on
Multiplying & Dividing
by Powers of 10
© T Madas
16 ÷ 0.1 =160
1.23 x 10 = 12.3
48 ÷ 10 = 4.8
0.58 x 10 =5.8
57 ÷ 1000 = 0.057
8.6 ÷ 0.01 = 860
32 ÷ 10 = 3.2
41 x 0.1 = 4.1
0.65 x 100 = 65
2.71 ÷ 0.01 = 271
2.25 x 10 =22.5
4.916 ÷ 0.001 = 4916
52 ÷ 1000 = 0.052
375 x 0.01 =3.75
665 x 0.1 = 66.5
792 ÷ 0.1 =7920
Multiply and Divide by Powers of 10
© T Madas
151 ÷ 0.1 = 1510
364 x 0.01 = 3.64
0.2 x 10 = 2
0.83 ÷ 10 = 0.083
930 x 0.01 = 9.3
18 ÷ 0.01 = 1800
17 ÷ 100 = 0.17
413 x 0.1 = 41.3
7.62 ÷ 10 =0.762
1.92 x 0.1 = 0.192
0.85 x 1000 =850
6.006 x 1000 = 6006
72 ÷ 1000 = 0.072
305 ÷ 0.01 =30500
609 x 0.001 = 0.609
1656 x 0.01 = 16.56
Multiply and Divide by Powers of 10
© T Madas
16.1 ÷ 0.1 =161
3.64 x 10 = 36.4
9.2 x 0.1 = 0.92
0.83 ÷ 10 =0.083
93 ÷ 100 = 0.93
1825 ÷ 0.01 = 18.25
1.7 x 0.1 = 0.17
0.04 x 10 = 0.4
7.62 ÷ 10 =0.762
1.48 ÷ 0.1 = 14.8
411 x 0.01 = 4.11
0.096 x 1000 = 96
27 ÷ 1000 = 0.027
305 x 0.001 = 0.305
609 ÷ 0.1 = 6090
96 x 0.0001 = 0.0096
Multiply and Divide by Powers of 10
© T Madas
© T Madas